The number 55722
55722 is a composite number with 16 divisors. Its prime factorisation is 2 × 3 × 37 × 251. Divisors (16): 1, 2, 3, 6, 37, 74, 111, 222, 251, 502, 753, 1506, 9287, 18574, 27861, 55722.
Pick any whole number from 1 to 100,000.
How to work it out
- 1
55722 has no famous special property in the usual lists (prime, square, cube, triangular, Fibonacci, palindrome, perfect), but it is still a composite number.
- 2
55722 is composite. Its prime factorisation is
- 3
The divisors add up to 114912; without 55722 itself that is 59190, so 55722 is abundant (59190 is more than 55722). Euler's totient φ(55722) = 18000 numbers up to 55722 share no factor with it.
- 4
The digits of 55722 add up to 21, and repeating that until one digit is left gives the digital root 3. The Collatz sequence (halve if even, else 3n+1) takes 34 steps to reach 1.
LaTeX source of the formulas on this page
\[ 55722 = 2 \times 3 \times 37 \times 251 \]
55722 at a glance
| Property | Value |
|---|---|
| Type | composite |
| Number of divisors | 16 |
| Sum of divisors | 114912 |
| Euler totient φ(n) | 18000 |
| Square | 3104941284 |
| Cube | 173013538227048 |
| Square root | 236.055078 |
| Digit sum / digital root | 21 / 3 |
| Collatz steps to 1 | 34 |
| Scientific notation | 5.5722 × |
55722 in other forms
| Form | Value |
|---|---|
| In words | fifty-five thousand seven hundred and twenty-two |
| Binary (base 2) | 1101100110101010 |
| Octal (base 8) | 154652 |
| Hexadecimal (base 16) | D9AA |
| Base 3 | 2211102210 |
| As time | 55722 seconds = 15 h 28 min 42 s |
Is 55722 divisible by 2 to 12?
| Divisor | Answer | Rule |
|---|---|---|
| 2 | Yes (55722 ÷ 2 = 27861) | A number is divisible by 2 if the last digit is even (0, 2, 4, 6, 8). |
| 3 | Yes (55722 ÷ 3 = 18574) | A number is divisible by 3 if the digits add up to a multiple of 3. |
| 4 | No (remainder 2) | A number is divisible by 4 if the last two digits make a multiple of 4. |
| 5 | No (remainder 2) | A number is divisible by 5 if the last digit is 0 or 5. |
| 6 | Yes (55722 ÷ 6 = 9287) | A number is divisible by 6 if it is divisible by both 2 and 3. |
| 7 | No (remainder 2) | A number is divisible by 7 if double the last digit and subtract it from the rest: the result is a multiple of 7. |
| 8 | No (remainder 2) | A number is divisible by 8 if the last three digits make a multiple of 8. |
| 9 | No (remainder 3) | A number is divisible by 9 if the digits add up to a multiple of 9. |
| 10 | No (remainder 2) | A number is divisible by 10 if the last digit is 0. |
| 11 | No (remainder 7) | A number is divisible by 11 if the alternating sum of the digits is a multiple of 11. |
| 12 | No (remainder 6) | A number is divisible by 12 if it is divisible by both 3 and 4. |
Questions
Is 55722 a prime number?
No. 55722 = 2 × 3 × 37 × 251, so it is divisible by 2.
What are the factors of 55722?
1, 2, 3, 6, 37, 74, 111, 222, 251, 502, 753, 1506, 9287, 18574, 27861, 55722.
What is 55722 in binary?
1101100110101010 (hexadecimal D9AA, octal 154652).
What is the square root of 55722?
About 236.0551.
Is 55722 divisible by 3?
Yes. Its digits add up to 21, a multiple of 3.
What is special about the number 55722?
It is a composite number with 16 divisors.